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Proceedings Paper

Laser-based micro alignment for fabrication of highly precise 2D fiber collimator arrays
Author(s): Markus Stark; Gerd Esser; Andre Lamott; Manfred Geiger
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Paper Abstract

In optical communication there are systems requiring a parallel transmission of several high bit rate data channels based on singlemode fibers. Especially for a free space transmission within such a system a precise collimation of the parallel channels is necessary to guarantee a low loss system. For this purpose compact two dimensional fiber collimator arrays can be used. A main quality characteristic for this arrays is the pointing accuracy, the angular deviation of the collimated beams to a theoretical optical axis. The angular deviation is caused by a lateral offset of the fiber axes to the axes of the corresponding micro lens. To minimize this offset we developed and analyzed an actor geometry for a fiber array which allows a laser based micro alignment of the fibers to the micro lenses. An alignment accuracy within submicrons can be realized which guarantees a pointing accuracy below 0.01 degrees. In this paper we demonstrate some important results of the FEM based analyzes to show the influence of different laser parameters for optimizing the alignment procedure and to minimize alignment time. Experimental results confirm the actor behavior calculated in the FE analyzes and demonstrate the qualification of laser based micro alignment of fibers for the assembly of highly precise two dimensional fiber collimator arrays.

Paper Details

Date Published: 15 July 2004
PDF: 12 pages
Proc. SPIE 5339, Photon Processing in Microelectronics and Photonics III, (15 July 2004); doi: 10.1117/12.529072
Show Author Affiliations
Markus Stark, Bayerisches Laserzentrum gGmbH (Germany)
Gerd Esser, Bayerisches Laserzentrum gGmbH (Germany)
Andre Lamott, Bayerisches Laserzentrum gGmbH (Germany)
Manfred Geiger, Friedrich-Alexander-Univ. Erlangen-Nuernberg (Germany)

Published in SPIE Proceedings Vol. 5339:
Photon Processing in Microelectronics and Photonics III
Jan J. Dubowski; Peter R. Herman; Friedrich G. Bachmann; Willem Hoving; Jim Fieret; David B. Geohegan; Frank Träger; Kunihiko Washio; Alberto Pique; Xianfan Xu; Tatsuo Okada, Editor(s)

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